Patent GB-189917956-A (GB)
Title: Improvements in or relating to Steam Generators and Furnaces therefor.
Inventor: SCHLEYDER CHARLES
Filed: 1899-09-05
Granted: 1900-03-17
Abstract: 17,956. Schleyder, C. Sept. 5. Steam-generator furnaces smoke-consuming; baffles; doors; blast apparatus; flue dust and ashes, collecting and removing; firebars and grates.-Relates to steam boilers for locomotive, marine, and stationary purposes, and comprises (1) arrangements of smoke-consuming baffles in the firebox ; (2) constructions of fire-doors with means for regulating and inducing a supply of air therethrough (3) means for removing dust and ashes from the smoke-box and returning them with smoke &c. to the ashpan or firebox, thus automatically cleaning the tubes and smoke-box, and preventing the escape of sparks ; (4) arrangements of chimney blowers or blast-pipes nozzles ; and (5) a special form of firebar and arrangement of grate. The baffles consist of two, three, or more transverse arches or partitions arranged in the firebox with passages between them. Various arrangements are described and illustrated in the Specification, of which two are shown in Figs. 5 and 35. One or more of the baffles may be of angular section, and their relative positions may be variously modified. The doors, numerous forms of which are described and illustrated in the Specification, are constructed with a chamber or chambers partly projecting into the fire-chamber, the interior of such chambers being divided by means of partitions, tubes, nozzles, concentric cylinders, funnels, or the like into a number of conduits for air, which, in passing through them, becomes heated. On the outside the door carries a solid or perforated cover, disc, or slide by which the admission of air can be regulated. Steam jets may be fitted to induce a current of air. Figs. 10 and 11 show one form of door with a single cylindrical chamber 2, open at the front, perforated at its bottom and sides at 4, and with an adjustable back-plate 5 having nozzles 8. The plate 5 is mounted on a fixed central screw 7, or on a correspondingly-placed plain bar. A ring of jets may be fitted to discharge steam near the mouths of the nozzles 8, or into them from the back as shown in Fig. 16. The cover 5, and also the front of the chamber facing the fire, may be perforated and fitted with a perforated disc or slide by which a further regulation of air supply may be effected. Fig. 20 shows in section another form of door, with a series of nozzles 18, in place of the cylinder 2, into which enter nozzles 8 on the fixed or adjustable plate 5. The plate 5 may, as before, be provided with a regulating disc or slide, and steam jets may be fitted. Fig. 22 shows, in section, a door made up of a number of tubes, and Fig. 27 another form, consisting of a number of concentric cones with cylindrical prolongations. The latter may be dispensed witb, or replaced by cones oppositely placed. The apparatus for removing dust and ashes from the smoke-box is shown in Fig. 35 as applied to a portable engine or road locomotive. It consists of a pipe 30, with one or more steam jets 34, leading from a funnel-shaped recess at the base of the smoke-box to the ash-pan. The pipe 30 is laterally flared near the ashpan. The ashes &c. may be delivered either into the ashpan, or through a chamber 42 at the back of the grate, into the firebox above the fire, a valve being provided to control the direction of delivery. A portion of the smoke and gases is returned with the ashes &c. to the firebox to be consumed, and the apparatus also acts to prevent the escape of sparks. A ring of steam jets 36 is placed round the blast pipe for use simultaneously with the jets 34 in the pipe 30. The application to a marine boiler and to a locomotive is illustrated in the Specification. The chamber 42 may be dispensed with. Two forms of "blower" or blast-pipe nozzle are shown in Figs. 36 and 38, the first consisting of a series of concentric rings, conically disposed, and the second of a cone with upwardly-directed perforations. The steam may be throttled by the cone a. Fig. 36, or the blast may be regulated by the nozzle-shaped regulator s, Fig. 38, shown in dotted lines. These blowers also serve to extinguish sparks. The firebars are of the form shown in Fig. 41, being constructed to leave openings increasing in width from the middle outwards. They are placed transversely,